Results are calculated based on user-selected yield goals, and can be displayed in either metric or US/Imperial units. The calculator is uniquely multilingual—providing full access in six languages including English, French, Spanish, Portuguese, Russian, and Chinese (Mandarin).

Compatible with all computer and mobile devices, this Crop Nutrient Removal Calculator is freely available at:http://ipni.info/calculator

Q: Can I create a bookmark for this tool on the home screen of my mobile device?
A: Yes. The technique varies based on the device. As an example, iPhone/iPad users follow these steps:

View the NRC page in your browser.

Tap the Share button: it's the icon in the middle at the bottom of the screen.

Tap on 'Add to the Home Screen'. An icon will be added to your home screen.

Q: Can a user select/change the units?
A: Yes. NRC calculates nutrient removal in both metric and imperial/US units. Users select their initial preference when starting up the NRC. This setting can be changed within the user preference setting.

Q: Can a user change the language?
A: Yes. NRC is a multilingual publication available in English, French, Spanish, Portuguese, Russian, and Mandarin (Chinese). Your language is automatically detected. This setting can be changed within the user preference setting.

Q: Can a user bookmark favorite crops?
A: Yes. For quick access, NRC allows the creation of a short list of common crops of interest. You may add or remove crops to your favorites list. Tap the Star icon next to a crop name.

Q: I don't see my crop of choice. Is this the final list?A: No. IPNI will be expanding the list of crops over time as good representative data becomes available.

Q: What are the current sources for data used in the tool?A: For a list of published sources used in the calculator please see the information section within the tool.

Additional Resources

IPNI's Mission

The mission of IPNI is to develop and promote scientific information about the responsible management of plant nutrition for the benefit of the human family.

IPNI is a global organization with initiatives addressing the world's growing need for food, fuel, fiber and feed. There is widespread concern for issues such as climate change and relationship of crop production to the environment and ecosystems, and IPNI programs are achieving positive results. Best management practices (BMPs) for nutrient stewardship encourage the concept of applying the right product (source), at the right rate, at the right time, and in the right place.